Purely random, thermally induced motion of
charge carriers.
Note: According to the type of
charge carriers undergoing diffusion, it is subdivided into electron diffusion,
hole diffusion, polaron diffusion, soliton diffusion,
etc. See also: electric drift
Source:
PAC, 2022, 94, 15. 'Glossary of terms relating to electronic, photonic and magnetic properties of polymers (IUPAC Recommendations 2021)' on page 18 (https://doi.org/10.1515/pac-2020-0501)